GNU bug report logs - #3350
23.0.93; Deactivation of region by the insert function

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From: Lennart Borgman <lennart.borgman <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 3350 <at> debbugs.gnu.org
Subject: bug#3350: 23.0.93; Deactivation of region by the insert function
Date: Fri, 22 May 2009 21:24:13 +0200

On Fri, May 22, 2009 at 9:10 PM, Stefan Monnier
<monnier <at> iro.umontreal.ca> wrote:
>> Then try activating the region with S-<arrow key>. This does not work.
>> However if the (insert ...) statement in msgtrc is commented out then
>> it works.
>
> That's because deativate-mark is a global variable, so
> a buffer-modification in one buffer is treated identically (w.r.t
> clearing the mark) as a modification in any other buffer.
>
>> I have not tested if this is a regression from Emacs 22.
>
> I don't think anything has changed in this regard.
> Just wrap the code in (let (deactivate-mark) ...)

Thanks, I see.  But it is pretty surprising ...

What is the reason that deactivate-mark is not buffer local?

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